A HELOC is a revolving line of credit secured by your home's equity. It works like a credit card: you have a credit limit, can borrow as needed during the draw period, repay, and borrow again.
38 steps across 12 sections
1. Draw Period (Typically 5-10 Years)
- Borrow up to your credit limit as needed
- Most lenders require interest-only minimum payments during this phase
- Can repay and re-borrow repeatedly (revolving credit)
- Variable interest rate adjusts with the prime rate
- Some HELOCs allow you to lock portions into a fixed rate during draw period
2. Repayment Period (Typically 10-20 Years)
- Can no longer draw new funds
- Begin paying principal plus interest
- Monthly payments increase significantly (payment shock is a real risk)
- Rate continues to be variable unless you locked a fixed-rate option
3. Equity
- Most lenders require at least 15-20% equity remaining after the HELOC
- Maximum combined loan-to-value (CLTV): typically 80-85%
- Calculation: (Mortgage balance + HELOC amount) / Home appraised value must be less than or equal to 80-85%
4. Debt-to-Income Ratio (DTI)
- Maximum: 43-50% (varies by lender)
- Includes all monthly debt payments divided by gross monthly income
5. Income and Employment
- Stable, verifiable income required
- W-2 employees, self-employed (2 years tax returns), and retirees with sufficient income all qualify
6. Example Calculation
- Home value: $400,000
- Current mortgage balance: $250,000
- Maximum CLTV: 80%
- Maximum total borrowing: $400,000 x 80% = $320,000
- Available HELOC: $320,000 - $250,000 = $70,000
7. Factors That Increase Your Limit
- Higher home appraisal value
- Lower mortgage balance
- Excellent credit score (some lenders go to 85-90% CLTV)
- Strong income and low DTI
8. Current Rules (2026)
- HELOC interest is tax-deductible only if the funds are used to "buy, build, or substantially improve" the home securing the HELOC
- Combined mortgage + HELOC debt limit for deduction: $750,000 (married filing jointly) or $375,000 (single)
- Not deductible: HELOC funds used for debt consolidation, tuition, vacations, or other non-home purposes
- Keep records of how HELOC funds are spent to substantiate the deduction
9. Payment Shock
- When the draw period ends and repayment begins, monthly payments can double or more
- Plan for this transition; do not assume you will refinance before repayment starts
10. Variable Rate Risk
- If the Fed raises rates, your payment increases immediately
- Rate caps exist but may allow significant increases (e.g., lifetime cap of 18%)
- Consider a HELOC with a fixed-rate lock option
11. Foreclosure Risk
- Your home is collateral; missing payments can lead to foreclosure
- A HELOC is a second lien, but the lender can still foreclose
12. Market Risk
- If home values decline, you could owe more than the home is worth
- Lenders can freeze or reduce your HELOC limit if your home value drops